Department of Physical Therapy, School of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.
Department of Physiotherapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
Motor Control. 2023 Oct 24;28(1):15-28. doi: 10.1123/mc.2023-0035. Print 2024 Jan 1.
Understanding postural control in low back pain (LBP) subgroups can help develop targeted interventions to improve postural control. The studies on this topic are limited. Therefore, the primary purpose of this study was to compare the postural control of LBP subgroups with healthy individuals during overhead load lifting and lowering.
In this cross-sectional study, the participants were 52 with LBP and 20 healthy. The LBP patients were classified based on the O'Sullivan classification system into 21 flexion patterns and 31 active extension patterns. The participants lifted the box from their waists to their overheads and lowered it to their waists. Changes in postural control parameters were measured with a force plate system.
The results of the analysis of variance showed that during load lifting, the mediolateral phase plane (p = .044) and the mean total velocity (p = .029) had significant differences between flexion patterns and healthy. Also, the load-lowering results showed that active extension patterns, compared with healthy, had significant differences in the anteroposterior-mediolateral phase plane (p = .042). The patients showed less postural sway than the healthy.
The results in this work highlight the importance of identifying the homogenous subgroups in LBP and support the classification of heterogeneous LBP. Different subgroups exhibit different postural control behaviors. These behaviors can be due to the loading of various tissues during different tasks.
了解腰痛（LBP）亚组的姿势控制有助于制定有针对性的干预措施来改善姿势控制。关于这个主题的研究是有限的。因此，本研究的主要目的是比较 LBP 亚组与健康个体在头顶负重升降过程中的姿势控制。
在这项横断面研究中，参与者包括 52 名腰痛患者和 20 名健康者。根据 O'Sullivan 分类系统，将 LBP 患者分为 21 个屈曲模式和 31 个主动伸展模式。参与者将盒子从腰部举到头顶，然后再将其降低到腰部。使用测力板系统测量姿势控制参数的变化。
方差分析的结果表明，在负重升降过程中，屈曲模式与健康组相比，在横向前后-平面相位（p =.044）和平均总速度（p =.029）方面存在显著差异。此外，在负重下降结果中，与健康组相比，主动伸展模式在前后-横向前后平面相位（p =.042）方面存在显著差异。患者的姿势摆动比健康者小。
本研究的结果强调了在腰痛中识别同质亚组的重要性，并支持对异质 LBP 的分类。不同的亚组表现出不同的姿势控制行为。这些行为可能是由于在不同任务中对不同组织的加载。
